16.2. 连接器配置

过程 16.1. 为 HTTP 连接器设立线程池

1. 定义线程工厂

   打开配置文件 standalone.xml（独立服务器）或 domain.xml（受管域）。这个文件位于 EAP_HOME/standalone/configuration 或 EAP_HOME/domain/configuration 目录。
   添加下列子系统条目，按照您的服务器的需要修改相关的值。

   <subsystem xmlns="urn:jboss:domain:threads:1.0">
       <thread-factory name="http-connector-factory" thread-name-pattern="HTTP-%t" priority="9" group-name="uq-thread-pool"/>
   </subsystem>	
   
   

   如果您想用 CLI 来完成这个任务，请在 CLI 命令行提示下执行下列命令：

   [standalone@localhost:9999 /] ./subsystem=threads/thread-factory=http-connector-factory:add(thread-name-pattern="HTTP-%t", priority="9", group-name="uq-thread-pool")

2. 创建执行器（Executor）

   您可以使用六种内置的 Executor 类来充当这个工厂的执行器。这六种执行器是：unbounded-queue-thread-pool、bounded-queue-thread-pool、blocking-bounded-queue-thread-pool、queueless-thread-pool、blocking-queueless-thread-pool 和 scheduled-thread-pool。
   在这个例子里，我们将使用 unbounded-queue-thread-pool 来充当执行器。修改 max-threads 和 keepalive-time 参数的值来满足您的服务器的需要。

   <unbounded-queue-thread-pool name="uq-thread-pool">
     <thread-factory name="http-connector-factory" />
     <max-threads count="10" />
     <keepalive-time time="30" unit="seconds" />
   </unbounded-queue-thread-pool>			
   
   

   或者您更愿意使用 CLI：

   [standalone@localhost:9999 /] ./subsystem=threads/unbounded-queue-thread-pool=uq-thread-pool:add(thread-factory="http-connector-factory", keepalive-time={time=30, unit="seconds"}, max-threads=30)

3. 让 HTTP 连接器使用这个线程池

   在相同的配置文件里，找到 web 子系统下的 HTTP 连接器元素并进行修改，让它使用之前步骤里定义的线程池。

   <connector name="http" protocol="HTTP/1.1" scheme="http" socket-binding="http" executor="uq-thread-pool" />
   

   或者您更愿意使用 CLI：

   [standalone@localhost:9999 /] ./subsystem=web/connector=http:write-attribute(name=executor, value="uq-thread-pool")

4. 重启服务器

   重启服务器（独立服务器或受管域）让修改可以生效。请用下列 CLI 命令来确认上面步骤里的修改已经生效：

   [standalone@localhost:9999 /] ./subsystem=threads:read-resource(recursive=true)
   {                  
       "outcome" => "success",
       "result" => {
           "blocking-bounded-queue-thread-pool" => undefined,
           "blocking-queueless-thread-pool" => undefined,
           "bounded-queue-thread-pool" => undefined,
           "queueless-thread-pool" => undefined,
           "scheduled-thread-pool" => undefined,
           "thread-factory" => {"http-connector-factory" => {
               "group-name" => "uq-thread-pool",
               "name" => "http-connector-factory",
               "priority" => 9,
               "thread-name-pattern" => "HTTP-%t"
           }},
           "unbounded-queue-thread-pool" => {"uq-thread-pool" => {
               "keepalive-time" => {
                   "time" => 30L,
                   "unit" => "SECONDS"
               },
               "max-threads" => 30,
               "name" => "uq-thread-pool",
               "thread-factory" => "http-connector-factory"
           }}
       }
   }
   [standalone@localhost:9999 /] ./subsystem=web/connector=http:read-resource(recursive=true)
   {
       "outcome" => "success",
       "result" => {
           "configuration" => undefined,
           "enable-lookups" => false,
           "enabled" => true,
           "executor" => "uq-thread-pool",
           "max-connections" => undefined,
           "max-post-size" => 2097152,
           "max-save-post-size" => 4096,
           "name" => "http",
           "protocol" => "HTTP/1.1",
           "proxy-name" => undefined,
           "proxy-port" => undefined,
           "redirect-port" => 443,
           "scheme" => "http",
           "secure" => false,
           "socket-binding" => "http",
           "ssl" => undefined,
           "virtual-server" => undefined
       }
   }